Add Organization JSON-LD to the home page (#244)

ddiff --git a/apps/server/src/net/discovery.test.ts b/apps/server/src/net/discovery.test.ts
iindex a29c421..232c7b4 100644
---- a/apps/server/src/net/discovery.test.ts
++++ b/apps/server/src/net/discovery.test.ts
@@@ -232,6 +232,7 @@ describe('crawl artifacts (plan T11)', () => {
      ]
      expect(blocks.map((b) => (JSON.parse(b[1] ?? '{}') as { '@type'?: string })['@type'])).toEqual([
        'WebSite',
++      'Organization',
        'WebApplication',
        // Vibe Heroes, the casual line's first game (plan T22).
        'WebApplication',
@@@ -239,7 +240,7 @@ describe('crawl artifacts (plan T11)', () => {
      ])
      const nodes = blocks.map((b) => JSON.parse(b[1] ?? '{}') as Record<string, unknown>)
      expect(nodes[0]?.['url']).toBe('https://openvibe.games')
--    expect(nodes[1]?.['applicationCategory']).toBe('GameApplication')
++    expect(nodes[2]?.['applicationCategory']).toBe('GameApplication')
      // Nothing private or per-user in the served nodes.
      const text = JSON.stringify(nodes)
      for (const p of PRIVATE) expect(text).not.toContain(p)
ddiff --git a/apps/server/src/net/discovery.ts b/apps/server/src/net/discovery.ts
iindex 8548ff1..4d535a6 100644
---- a/apps/server/src/net/discovery.ts
++++ b/apps/server/src/net/discovery.ts
@@@ -64,6 +64,7 @@ interface SeoToolkit {
    sitemapXml(urls: SeoUrl[]): string
    jsonLd: {
      website(o: { name: string; url: string; description: string }): unknown
++    organization(o?: Record<string, unknown>): unknown
      softwareApp(o: {
        name: string
        url: string
@@@ -296,6 +297,7 @@ function llmsFullBody(): string {
  export function homeJsonLd(): unknown[] {
    return [
      seo.jsonLd.website({ name: SITE_NAME, url: SITE, description: DESCRIPTION }),
++    seo.jsonLd.organization(),
      seo.jsonLd.softwareApp({
        name: 'Scraplandia',
        url: `${PLAY}/`,